Occasional Papers of the Museum of Zoology 107 



dera (Cb7), is probably this form, although its condition does 

 not permit of its certain identification. In this connection, it 

 is at least interesting that the only amphibian collected in 

 Curacao, Pleurodema hracliyops (Cope), is said by the in- 

 habitants to have been introduced from Aruba in sand for 

 construction, 



Pleurodonte lima (Ferussac) 



Helix lima Ferussac (1S21; Tabl. Syst., 32; Hist., fig. xlvi-1, 2). H. 

 lima Pfr. (1848; Mon. Helic. Viv., I, 266); exclusive of var. p. Pleuro- 

 donte lima Pilsbry (1889; Man. Conch., V, 58); exclusive of Otala 

 asperula, in synonymy, and the reference to Curasao. 



As discussed under the next species, there is no reason for 

 the citation of P. lima from Curacao. 



Pleurodonte incerta (Ferussac) 

 Helix lima "variete et jeune age" Ferussac (Hist., fig. xlvi, A-4, 5). 

 Helix incerta Ferussac (Hist., fig. cv-2). Otala asperula Beck (1837; 

 Index, 36); founded on "H. Hgen. lima, var. notabilior Fer. ; F. H., 

 xlv, A, 4r-5." Helix lima, var. p Pfr. (1848; Mon. Helic. Viv., I, 266). 

 H. lima var. 7Wtabilis "Fer." Pfr. (I. c.) ; in synonymy. H. incerta var. 

 notalilis Albers-Martens (1860; Die Heliceen, 144). Pleurodonte incerta 

 Pilsbry (1889; Man. Conch., V, 57-58). Pleurodonte incerta Yernhout 

 (1914; Notes Leyden Mus., 179). P. lima Vernhout (I.e.). 



In the Histoire, Ferussac illustrated his typical form of 

 H. lima on Plate 46, but also figured an unnamed "variety" 

 on Plate 46 A. Beck founded his Otalu asperula on this ''nota- 

 bilior" variety,^^ and added ''I. Curacao" as the type locality 

 of his new species. Pfeiffer placed Beck's species, along with 

 "H. lima var. notahilis Fer. " (the first use of the latter name), 

 in the synom-my of his H. lima, var. P, and quoted Curasao 

 as the locality. On the other hand, Albers-Martens regarded 

 notahilis as a variety of H. incerta, and so, very naturally, 

 included Curacao as the habitat. Pilsbry^ followed Albers- 

 Martens in the disposition of notahilis, but copied Pfeiffer in 

 the inclusion of Otala asperula, and its locality, under H. lima. 



45 xlv, A is obviously a misprint for Plate 46A. 



